Home / 28,530.14-39,377.04-19,115.12

Finding the Fourth Proportional to 28,530.14, 39,377.04 and 19,115.12

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Solution

The fourth proportional to 28,530.14, 39,377.04 and 19,115.12 is: 26,382.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.14 : 39,377.04 = 19,115.12 : x
  2. Step 2: Convert to fraction form
    28,530.14/39,377.04 = 19,115.12/x
  3. Step 3: Cross multiply
    28,530.14x = 39,377.04 × 19,115.12
  4. Step 4: Simplify right side
    28,530.14x = 752,696,844.84
  5. Step 5: Solve for x
    x = 752,696,844.84/28,530.14
  6. Step 6: Final answer
    x = 26,382.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.